Grammar review:

* Add period to divide sentence properly.

Change-Id: I4a4bb860daa34b8860336c042bb44bebd5497cb1
Resorted CRG chapters and added IPv6 config to CloudAdminGuide

Config Ref now has sorted chapters (matches CLI chapters). IPv6
edited and moved to Cloud Admin Guide. Moved networking sections
into networking directory.

Change-Id: Ieffdf129af05c0483aca31eddb7fc824a113b9f3
Partial-Bug: #1290687